Phone Booth

Situation puzzles (sometimes called lateral thinking puzzles) are ones where you need to ask lots of yes or no questions to figure out what happened in the situation. These are good puzzles for groups where one person knows the puzzle and answers the questions.

A rich man's son was kidnapped. The ransom note told him to bring a valuable diamond to a phone booth in the middle of a public park. Plainclothes police officers surrounded the park, intending to follow the criminal or his messenger. The rich man arrived at the phone booth and followed instructions but the police were powerless to prevent the diamond from leaving the park and reaching the crafty villain. What did he do?

Answer

This is a true story from Taiwan. When the rich man reached the phone booth he found a carrier pigeon in a cage. It had a message attached telling the man to put the diamond in a small bag which was around the pigeon's neck and to release the bird.
When the man did this the police were powerless to follow the bird as it returned across the city to its owner.Hide

a possible way to retrieve the crystal would be to give these instructions...
i am the kidnapper and the instructions are

put the diamond on the floor in a pocket size bag that is already in place.. and then leave and stand outside of phone booth, do not look at the phone booth and go home after 20 minutes.. (of course if you did not did what i say, i will kill the son or whatever)

i will send as many of my accomplices as i can (e.g. 20), into that phone booth and only one of them would come out with the diamond in his pocket.. police would not know which one and so would not be able to tail that person..